Algebra and Number Theory -- Discrete-Log-Based Signatures May Not Be Equivalent to Discrete Log -- Do All Elliptic Curves of the Same Order Have the Same Difficulty of Discrete Log? -- Adapting Density Attacks to Low-Weight Knapsacks -- Efficient and Secure Elliptic Curve Point Multiplication Using Double-Base Chains -- Multiparty Computation -- Upper Bounds on the Communication Complexity …